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Type: Journal article
Title: Improved field emission stability from single-walled carbon nanotubes chemically attached to silicon
Author: Shearer, C.
Fahy, A.
Barr, M.
Dastoor, P.
Shapter, J.
Citation: Nanoscale Research Letters, 2012; 7(1):432-1-432-4
Publisher: Springer
Issue Date: 2012
ISSN: 1931-7573
Statement of
Cameron J Shearer, Adam Fahy, Matthew Barr, Paul C Dastoor and Joseph G Shapter
Abstract: Here, we demonstrate the simple fabrication of a single-walled carbon nanotube (SWCNT) field emission electrode which shows excellent field emission characteristics and remarkable field emission stability without requiring posttreatment. Chemically functionalized SWCNTs were chemically attached to a silicon substrate. The chemical attachment led to vertical alignment of SWCNTs on the surface. Field emission sweeps and Fowler-Nordheim plots showed that the Si-SWCNT electrodes field emit with a low turn-on electric field of 1.5 V μm⁻¹ and high electric field enhancement factor of 3,965. The Si-SWCNT electrodes were shown to maintain a current density of >740 μA cm⁻² for 15 h with negligible change in applied voltage. The results indicate that adhesion strength between the SWCNTs and substrate is a much greater factor in field emission stability than previously reported.
Keywords: Single-walled carbon nanotubes; chemical attachment; field emission; field emission stability; nanoelectronics
Description: Published: 1 August 2012
Rights: © 2012 Shearer et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: 10.1186/1556-276X-7-432
Grant ID: ARC
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Chemistry publications

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